Check `NetworkRequest#mDestroyed` before each network request?

I recently ran into an issue while trying to make a network request on an NextcloudAPI instance, on which I called close() before.

Of course, it failed, but at an odd place, that I didn't expected (I think context was null at some place).

This made me wondering why we do check for NetworkRequest#mDestroyed when connecting, but not before each request. Wouldn't make it sense to add this check also at the beginning of AidlNetworkRequest#performNetworkRequestV2 and throw a more meaningful IllegalStateException or something alike?

cc @David-Development

Parti da AidlNetworkRequest#performNetworkRequestV2 e confrontalo con il controllo esistente di NetworkRequest#mDestroyed eseguito durante connect. Verifica che la chiamata a close() prima di una richiesta venga rilevata all’inizio dell’operazione e produca una IllegalStateException significativa anziché un successivo errore dovuto a un contesto null.